Q. 93.7( 3 Votes )

A magnetic dipole of magnetic moment 0.72 A m2 is placed horizontally with the north pole pointing towards south. Find the position of the neutral point if the horizontal component of the earth’s magnetic field is 18 μT.

Answer :

Given :-



When the magnet is such that the its north pole faces the geographic south of earth, the natural point lies along the axial line of the magnet







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The force on a north pole, is parallel to the field . Does it contradict our earlier knowledge that a magnetic field can expert forces only perpendicular to itself.

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